File:Snodgrass Rhopalosiphum Prunifoliae.jpg
Plate 4 from Insects, their way and means of living, R. E. Snodgrass. [1]
The apple-grain aphis (Rhopalosiphum prunifoliae)
The winged form produced in the fall that migrates from the grain to the apple trees. (Enlarged 20 times)
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This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.
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See Category:Snodgrass for the reasoning for using this tag.